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  1. #1

    Testing Novis vs. OEM carbs.....

    If weather permits this Saturday I plan to test the OEM carbs Ive been running for the past 3 seasons against a set of 48mm Novis.

    The test will be conducted with a 2000GPR Lowell 1390 Triple. It has FF plate,800 grate, VF3's, Advent, Ho pump with 2 inch extension, DF screw, with pinned PVs....

    Not sure what the gains will be but I expect some topend rpms. I feel like the carbs will "hit" harder in the midrange but my real concern is top speed.

    I am lucky enough to have a good friend that was willing to send me the carbs to test. Thanks....

    Anyone have a guess on what the results will be????


  2. #2
    WATER WOODY's Avatar
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    I gained over 1 mph on top(120 rpm) going from OEM carbs to Novi's.The mid range hit with Novi's are great! Novi's will really improve the overall performance,you will be happy.

  3. #3
    philip_gpr's Avatar
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    use big main jets on the Lowell motor

  4. #4
    WATER WOODY's Avatar
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    Phil is right,Novi's have a weaker signal compared to BlackJacks...What is the current jetting? Lowell's motors like alot of fuel.

  5. #5

    signal

    I wonder what the differences in signal strength are between the OEM and Novis???

    Woody,

    I know your at high elevation but how much jetting differences did you have between fully dialed in OEM's and Novis?

  6. #6
    Quote Originally Posted by philip_gpr View Post
    use big main jets on the Lowell motor
    Everyone keeps saying this but I was way too rich starting out with "big" jetting. Every time I leaned the mains I gained revs....

  7. #7
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    Quote Originally Posted by OutlawGPR View Post
    Everyone keeps saying this but I was way too rich starting out with "big" jetting. Every time I leaned the mains I gained revs....
    ask joeblo if you want some jet direction, he is running a novi fed ported tripple from lowell

    ps: i love my novi's

  8. #8
    Mik72e's Avatar
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    With my old Lowell ported 1390

    I ran 135 pilots with 180 mains i learnt the hard way Lowell engines love big jets.

    Listen to Lowell with specs

    Joes is little different its a 1300 and triple.

  9. #9
    Quote Originally Posted by Mik72e View Post
    With my old Lowell ported 1390

    I ran 135 pilots with 180 mains i learnt the hard way Lowell engines love big jets.

    Listen to Lowell with specs

    Joes is little different its a 1300 and triple.
    With that setup my boat wouldnt turn 6800 rpms.....it might not even come out of the hole....

  10. #10

    novi install...

    Not very happy with the install so far. Everything is backwards and those bottom bolts are just plain stupid. I have spent exactly one hour trying to thighten those bottom bolts. I have bent wrenches and bought wrenches and have never seen anything so stupid in all my days of wrenching...

    The guy I borrowed them from was always complaining about how hard the bolts were to get to. Now I understand, they had better rock this boat. Jet changes will be a nightmare.....

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